diff --git a/app/Models/Study.php b/app/Models/Study.php
index a315912..1cef46b 100644
--- a/app/Models/Study.php
+++ b/app/Models/Study.php
@@ -40,4 +40,19 @@ public function shares(): HasMany
     {
         return $this->hasMany(SharedStudy::class);
     }
+
+    public function scopeActive($query)
+    {
+        return $query->where('is_archived', false);
+    }
+
+    public function scopeArchived($query)
+    {
+        return $query->where('is_archived', true);
+    }
+
+    public function scopeUnlocked($query)
+    {
+        return $query->where('is_locked', false);
+    }
 }